[Orc] Add error codes and a new std::error_category for remote-jit errors.

These will be used by an upcoming patch that adds remote-jit support utilities
to ORC.

llvm-svn: 257297
diff --git a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
index a17f52e..6e10dbc 100644
--- a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
+++ b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
@@ -4,6 +4,7 @@
   NullResolver.cpp
   OrcCBindings.cpp
   OrcCBindingsStack.cpp
+  OrcError.cpp
   OrcMCJITReplacement.cpp
   OrcTargetSupport.cpp